公开(公告)号：US06595304B2

公开(公告)日：2003-07-22

申请号：US09824133

申请日：2001-04-03

申请人： Zhihua Chen

发明人： Zhihua Chen

IPC分类号： E21B1008

CPC分类号： E21B10/52 ,  E21B10/16

摘要： This invention relates to a roller bit applying for the oil, natural gas, mine and geological drilling, and more particularly relates to a kind of roller bit with the parallel inlayed compacts, it includes head and cone, the compact land and the teeth-groove are arranged on the cone, the difference is that there are 2 to 3 compacts having the cylindrical body being arranged on the top of the base teeth along the teeth direction.The cutting performance of the present invention is similar to that of the oblate compacts, and, by utilizing the conventional cylindrical compacts, it is not only easy to process and with low manufacturing cost, but the bit can effectively drill through the stringered earth formation with both hard and soft formation and thus better economic benefit from drilling the stringered formation can be obtained.

摘要翻译： 本发明涉及一种用于石油，天然气，矿山和地质钻井的滚子钻头，更具体地涉及一种具有平行嵌入式压块的滚子钻头，其包括头部和锥体，紧凑的平台和齿槽 不同之处在于，具有2至3个压块，其中圆柱体沿着齿方向布置在基牙的顶部上。本发明的切割性能类似于扁圆形压块的切割性能， 并且通过利用传统的圆柱形压块，不仅容易加工并且具有低制造成本，而且钻头可以有效地穿过硬质和软质地层的横截面地层，从而更好地经济效益从钻井成角度 得到。